Hi, Terry, Two ways. First, simple - go to http://www.geocities.com/galembo_alex/chc3.html fill the form: 587.3295358 (nonstretched D5, use dot to separate decimals) Inharmomicity 0 semitones 0 cents 60 Press "Calculate" Receive result :608.0417 Hz Second: calculate (for examplee, using Excel: Freq(D5)*2^60/1200) best luck Alex ************ Alexander Galembo, Ph.D Visiting Researcher Dept. of Speech, Music and Hearing Royal Institute of Technology Drottning Kristinas v. 31 SE-10044, Stockholm Sweden Tel. work 46-8-7907856 home 46-8-7369978 Fax 46-8-7907854 email: alex@speech.kth.se WEB http://www.geocities.com/galembo_alex/ -----Original Message----- From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf Of Farrell Sent: den 13 januari 2002 16:34 To: pianotech@ptg.org Subject: String Tension Calculation To those of us less mathematically challenged than I: I have the formula(s) (thanks Ron N.) for converting hertz to tension (given a specific string diameter, density (or whatever), and speaking length), but I need to convert pitch in units of notes and cents into hertz. For example: I measure a pitch on my Accutuner as being D5 plus 60 cents. I know that I can find a non-stretched pitch in hertz for D5 on a table somewhere (or any other note - I have this somewhere I think), but how do I add the 60 cents to the D5 hertz value? Thanks to any of the professors out there. Terry Farrell
This PTG archive page provided courtesy of Moy Piano Service, LLC